Pipe-wrench.



No. 865,553. PATENTED SEPT. 10, 1907.

.G. O. WINSLOW.

PIPE WRENCH.

APPLICATION FILED JUNE 23. 1906.

Q Vi hie-ones n-m Nasms PETERS 50., WASHINGTON, D. c.

UNITED STATES PATENT oEEIoE.

GEORGE O. WINSLOW, OF ALBION, MICHIGAN.

PIPE-WRENCH.

Specification of Letters Patent.

Patented Sept. 10, 1907.

Application filed June 23,1906. Serial No. 323,085.

of which the following is a specification.

This invention relates to improvements in wrenches.

My improved wrench is particularly designed for a pipe wrench althoughit is adapted for other uses.

The objects of my invention are, first, to provide an improved wrenchwhich may be very quickly adjusted to any object within its scope, andalso one which may be quickly released from an object. Second, toprovide an improved wrench in which the parts are so arranged that thereis no liability of their binding or becoming wedged upon each other sobut that they can be easily released from an object. Third, to providean improved wrench, which is very strong and durable and at the sametime very simple in construction, having very few parts, and thosesimple in form and assembled without pivots, bolts, or the like.

Further objects, and objects relating to structural details willdefinitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification.

The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is clearlyillustrated in the accompanying drawing forming a part of thisspecification, in which Figure l is a side elevation of my improvedWrench. Fig. 2 is a detail front view of the same. Fig. 3 is an enlargeddetail, partially in longitudinal section, on a line corresponding toline 33 of Fig. 2, the relative position of the parts in gripping a pipebeing indicated by dotted lines. Fig. 4 is an enlarged detail, partiallyin longitudinal section, of a modified construction. Fig. 5 is a detailcross-sectional view taken on a line corresponding to line 5-5 of Fig.4. Fig. 6 is a longitudinal detail section taken on aline. correspondingto line G(3 of Fig. t.

In the drawing, the sectional views are taken looking in the directionof the little arrows at the ends of the section lines, and similarletters of reference refer to similar parts throughout the severalviews.

Referring to the drawing, I provide a lever-like handle A having a headA on its forward end. The head A is provided with a fixed jaw A. Theadjustable jaw B is carried by the shank B, the jaw and the shank beingformed integral, the jaw projecting like a hook. The shank B is arrangedthrough the loop-like link 0 and is threaded at its rear end to receivethe adjusting nut b. The adjusting nut is provided at its inner end withan annular flange b, which is arranged in the grooves 0 providedtherefor in the link. These grooves are open at the top, so that the nutmay be dropped into them and the shank inserted. The handle is providedon its front edge with a curved bearing a for the link C, and the headAprojects at each side and is formed into curved bearing shoulders a forthe forward edge of the link. The head is also provided with a curvedbearing surface as a for the inner edge of the shank B of the movablejaw. The shank is also pro vided with a bearing surface on its rear edgefor the link. The link is provided with a forwardly-projectingoverhanging portion arranged to engage the bearing surface on the rearedge of the shank at a point in advance of the bearing point of theshank 0n the head. This secures a clamping action of the movable jawwhen in use in addition to its threaded nut adjustment.

On the inner edge of the handle A is a forwardlyprojecting retaining luga for the link. This prevents the link from slipping back upon thehandle, and at the same time it allows the parts to be freelydisassembled, as, by removing the nut 12 the shank B is free to be drawnfrom the link, which allows it to be slipped over the lug.

In the modified construction shown in Fig. 5, the head of the lever-likehandle is provided with a shoulderlike stop or lug a which engages thethickened portion 0 of the link 0 when the link is in position on thehandle.

The jaw B is provided with a rib b which extends well'around the curveof the jaw, onto the shank so that it is strengthened at this point. Theoverhanging link 0, supports the shank to a point beyond this rib, sothat a structure comparatively light possesses very great strength, theweakest portions being strengthened and relieved of strain.

The jaw A is preferably held in the head A by a dove-tail rib runningtransverse thereto. This rib r is somewhat dovetailed in shape and isadapted to be driven into a transverse dove-tail slot formed in thehead. This holds the jaw so that there is no liability of its beingloosened by the strain or use and at the same time is can be readilyremoved when it is desired to renew it.

In operation, the movable jaw 13 is drawn up against the object.Accurate or tight adjustment is not required, as the jaws have atendency to close together when the power is applied the parts beingillustrated by dotted lines in their gripping position in Fig. 3. Whenpressure is applied to the handle or lever A, the link rocks on itsbearings until the jaws are tight upon the work. The greater the powerapplied, the greater the holding or gripping force of the jaws. The link0 engaging the shank of the movable jaw at a point well in advance ofits pivot point, prevents any tendency it may have to tilt back.

By arranging the link as I have described, I do away with pivot pins, sothat the parts are not weakened by boring or forming holes therethrough,and there are no parts to shear off as where pivot pins are used, and Ialso provide a structure which'is very durable. When it is desired torelease my improved wrench, it is only necessary to reverse the lever A,which effectively disengages the jaws or frees them so that the nut bcan be easily manipulated. The nut b is in position so that it can bereadily grasped by the operator and can be much more rapidly adjustedthan where it is necessary to manipulate the same with the finger andthumb, as is the case where the nut is placed between parts.

By arranging the threaded part of the shank and nut as I have shownthem, there is no danger of the threads becoming worn or the nutbecoming wedged so that it cannot be readily turned.

The parts of my improved wrench are very simple in construction and canbe readily assembled. As before remarked, the parts subject to strainare reinforced and protected so that although made comparatively lightin weight, it possesses very great strength.

I have illustrated and d eseribed my improved wrench in detail in theform preferred by me on account of its simplicity and economy ofmanufacture. I am, however, aware that it can be varied considerably instructural details without departing from my invention.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a wrench, the combination of the handle having a head on itsforward end; a fixed jaw on said head; a movable jaw; a shank thereforhaving a threaded portion at its rear end, said shank and jaw beingformed integral and having ribs 1) thereon extending from the jawrearwardly onto the shank; a looplike link adapted to receive said shankarranged on said handle, said link having a forwardly projcting portionoverhanging the said fixed jaw and having vertical grooves therein atits rear end curved hearings on said head for the forward edge and innerend of said link; a nut on the rear end of the shank having an annularflange on its forward end arranged in said grooves in said link; and anoutwardly and forwardly projecting retaining lug for said link on theinner edge of said handle; substantially as and for the purpose setforthv 2. in a wrench, the combination of the handle having a head onits forward end; a fixed jaw on said head; a movable jaw; a shanktherefor having a threaded portion at its rear end; a loop-like linkadapted to receive said shank arranged on said handle, said link havinga forwardly projecting portion overhanging the said fixed jaw and havingvertical grooves therein at its rear end; curved hearings on said headfor the forward edge and inner end of said link a nut on the rear end ofthe shank having an annular flange 011 its forward end arranged in saidgrooves in said link; and an out\\"ardly and forwardly projectingretaining lug for said link on the inner edge of said handle,substantinlly as and for the purpose set forth.

25. In a wrench, the combination of the handle having a head on itsforward end; a fixed jaw on said head; a mow able jaw; a shank thereforhaving a threaded portion at its rear end; a loop-like link adapted toreceive said shank arranged on said handle. said link having a forwardlyprojecting portion overhanging the said Iixed jaw and having verticalgrooves therein at its rear end; curved hearings on said head for theforward edge and inner end of said link; a nut on the rear end of theshank having an annular flange on its forward end arranged in saidgrooves in said link, substantially as and for the purpose set forth,

-.t. In a wrench, the combination of the handle having a head on itsforward end a fixed jaw on said head; a movable jaw; a shank thereforhaving a threaded portion at its rear end, said shank and jaw beingformed integral and having ribs 7) thereon extending from the jawrearwardly onto the shank; a loop-like link adapted to receive saidshank arranged on said handle, said link having a forwardly portionoverhanging the said fixed jaw; curved l'iearings on said head for theforward edge and inner end of said link; a nut on the rear end of theshank; and an outwardly and forwardly projecting retaining lug for saidlink on the -inner edge of said handle, substantially as and for thepurpose set forth.

In a wrench, the combination of the handle having a head on its forwardend; a fixed jaw on said head; a movable jaw; a shank therefor having athreaded portion at its rear end; a loop-like link adapted to receivesaid shank arranged on said handle, said link having a forwardlyprojecling portion overhanging the said fixed jaw; curved hearings onsaid head for the forward edge and inner end of said link: a nut on therear end of the shank; and an outwardly and forwardly projectingretaining lug for said link on the inner edge of said handle.substantially as and for the purpose set forth.

(3. In a wrench, the combination of the handle having a head on itsforward end; a fixed jaw on said head; a movable jaw; a shank thereforhaving a threaded portion at its rear end, said shank and jaw beingformed integral and having ribs 1) thereon extending from the jawrearwardly onto the shank; a loop-like link adapted to receive saidshank arranged on said handle, said link having vertical grooves thereinat its rear end; curved bearings on said head for the forward edge andinner end of said link; a nut on the rear end of the shank, having anannular flange on its forward end arranged in said grooves in said link;and an outwardly and forwardly projecting retaining lug for said link onthe inner edge of said handle, substantially as and for the purpose setforth.

7. In a wrench, the combination of the handle having a head on itsforward end; a fixed jaw on said head a movable jaw; a shank thereforhaving a threaded portion at its rear end, said shank and jaw beingformed integral and having ribs (1 thereon extending from the jawrearwardly onto the shank; a looplike link adapted to receive said shankarranged on said handle; curved bearings on said head for the forwardedge and inner end of said link; a nut on the rear end of the shank;ilild'flll outwardly and forwardly projecting retaining lug for saidlink on the inner edge of said handle; substantiall as and for thepurpose set forth.

8. In a wrench, the combination of the handle having a head on itsforward end; a fixed jaw on said head; a mov able jaw; a shank thereforhaving a threaded portion at its rear end; a loop-like link adapted toreceive said shank arranged on said handle; hearings on said head forthe forward edge and inner end of said link; a nut on the rear end ofthe shank; and an outwardly and forwardly projecting retaining lugforsaid link on the inner edge of said handle, substantially as and forthe purpose set forth.

5). The combination with a handle having a head at its forward end and acurved bearing on its front edge, said head projecting at each side ofsaid handle to form curved bearing shoulders. said head also having acurved bearing surface on its rear edge or back; a fixed jaw on saidhead; a movable jaw; a shank for said movable jaw having a iearingsurface on its front edge adapted to rest on the bearing surface on theback of said head, said shank also having a bearingsurface on its rearedge; a loop-like link adapted to receive said shank, arranged on saidhandle to emb ace the same, said link being adapted to engage saidbearing shoulders on said head with a sliding and rocking contact andsaid hearing on the front edge of said handle with a sliding contact,the said link being provided with a forwardly projecting or overhangingportion arranged to engage the bearing surface on the rear edge of saidshank at a point in advance of the bearing point of said shank on saidhead, said link being provided with vertical grooves at its rear end;and an adjusting nut threaded upon the rear end of said shank, said nuthaving an annular flange at its forward end arranged in said grooves insaid link, whereby a rocking movement of said shank in said link ispermitted, coacting for the purpose specified.

10. The combination with a handle having a head at its forward end and abearing on its front edge, said head projecting at each side of saidhandle to form bearing ,rear edge or back;

shoulders, said head also having a bearing surface on its rear edge orback; a fixed jaw on said head; a movable jaw; a shank for said movablejaw having a bearing sur face on its front edge adapted to rest on thebearing surface on the back of said head, said shank also having abearing surface on its rear edge; a loop-like link adapted to receivesaid shank, arranged on said handle to embrace the same. said link beingadapted to engage said bearing shoulders on said head with a sliding androcking contact and said bearing on the front edge of said handle with asliding contact, the said link being provided with a forwardlyprojecting or overhanging portion arranged to engage the bearing surfaceon the rear edge of said shank at a point in advance of the bearingpoint of said shank on said head, said link being provided with verticalgrooves at its rear end; and an adjusting nut threaded upon the rear endof said shank, said nut having an annular flange at its forward endarranged in said grooves in said link, whereby a rocking movement ofsaid shank in said link is permitted, coacting for the purposespecified.

forward end and a curved bearing on its front edge, said head projectingat each side of said handle to form curved bearing shoulders, said headalso having a curved bearing surface on its rear edge or back; a fixedjaw on said head; a movable jaw; a shank for said movable jaw having abearing surface on its front edge adapted/to rest on the bearing surfaceon the back of said head, said shank also having a bearing surface onits rear edge; a loop-likelink adapted to receive said shank, arrangedon said handle to embrace the same, said link being adapted to engagesaid bearing shoulders on said headwith a sliding and rocking contactand said bearing o n the front edge of said handle with a slidingcontact, the said link being provided with a forwardly projecting oroverhanging portion arranged to engage the bearing surface on the rearedge of said shank at a point in advance of the bearing point of saidshank on said head, and means for adjustably securing said shank in saidlink.,coacting for the purpose specified.

12. [Lhecombination with a handle having a head at its forward end and abearing on its front edge, said head projecting at each side of saidhandle to form bearing shoulders, said head also having a bearingsurface on its a fixed jaw on said head; a movable jaw; a shank for saidmovable jaw having a bearing surface on its front edge adapted to reston-the bearing surface on the back of said head, said shank also havinga bearing surface on its rear edge; a loop-like link adapted to receivesaid shank, arranged on saidhandle to embrace the same, said link beingadapted to engage said bearing shoulders on said head with a sliding androcking contact and said bearing on the front edge of said handle with asliding contact, the said link being provided with a forwvardlyprojecting or overhanging portion arranged to engage the bearing surfaceon the rear edge of said shank at a point in advance of the bearingpoint of said shank on said head, and means for adjustably securing saidshank in said link, coacting for the purpose specified.

123. The combination with a handle having a head at its forward end anda curved bearing on its front edge, said head projecting at each side ofsaid handle to form curved bearing shoulders, said head also having acurved bearing surface on its rear edge or back; a fixed jaw on saidhead; a movable jaw; a shank for said movable jaw having a bearingsurface on its front edge adapted to rest on the bearing surface-on theback of said head, said shank also having a bearing surface on its rearedge; and a loop-like link adapted to receive said shank, arranged onsaid handle to embrace the same, said link being adapted to engage saidbearing shoulders on said head with a sliding and rocking contact andsaid bearing on the front edge of said handle with a sliding contact,the said link being provided with a forwardly projecting 11. Thecombination with a handle having a head at its or overhanging portionarranged to engage the bearing surface on the rear edge of said shank ata point in advance of the bearing point of said shank on said head,coacting for the purpose specified.

14. The combination with a handle having a head at its forward end and abearing on its front edge, said head projecting at each side of saidhandle to form bearing shoulders, said head also having a bearingsurface on its rear edge or back; a fixed jaw on said head; a movablejaw; a shank for said movable jaw having a bearing surface on its frontedge adapted to rest on the bearing surface on the back of said head,said shank also having a bearing surface on' its rear edge; and aloop-like link adapted to receive said shank, arranged on said handle toembrace the same, said link being adapted to engage said bearingshoulders on said head with a sliding and rocking contact,and saidbearing on the front edge of said handle witha sliding contact, the saidlink being provided with a forwardly projecting or overhanging portionarranged to engage the bearing surface on the rear edge of said shank ata point in advance of the bearing point of said shank on said head,coacting for the purpose specified.

15. The combination with a handle having a head at its forward end and abearing on its front edge, said head projecting at each side of saidhandle to form bearing shoulders, said head also having a bearingsurface on its rear edge or back; a fixed jaw on said head; a movablejaw; a shank for said movable jaw having a bearing surface on its frontedge adapted to rest on the bearing surface on the back of said head; a1oop-like link adapted to receive said shank, arranged on said handle toembrace the same, said link being adapted to engage said bearingshoulders on said head with a sliding and rocking contact and saidbearing on the front edge of said handle with a sliding contact, saidlink being provided with vertical grooves at its rear end; and anadjusting nut threaded upon the rear end of said shank, said nut havingan annular flange at its forward end arranged in said grooves in saidlink, whereby a rocking movement of said shank is permitted, coaetingfor the purpose specified.

16. The combination with a handle having a head at its forward end and abearing on its front edge, said head projecting at each side of saidhandle to form bearing shoulders, said head also having a bearingsurface on its rear edge or back; a fixed jaw on said head; a movablejaw; a shank for said movable jaw having a bearing surface on its frontedge adapted to rest on the bearing surface on the back of said head; aloop-like link adapted to receive said shank, arranged on said handle toembrace the same, said link being adapted to engage said bearingshoulders on said head with a sliding and rocking contact and saidbearing on the front edge of said handle with a sliding contact; andmeans for adjustably securing said shank in said link, coacting for thepurpose specified.

17. The combination with a handle having a head at its forward end and abearing on its front edge, said head projecting at each side of saidhandle to form bearing shoulders, said head also having a bearingsurface on its rear edge or back; a fixed jaw on said head; a movablejaw; a shank for said movable jaw having a bearing sur face on its frontedge adapted to rest on the bearing surface on the back of said head anda loop-like link adapted to embrace the same, said link being adapted toengage said bearing shoulders on said head with a sliding and rockingcontact and said bearing on the front edge of said handle with a slidingcontact, coacting for the purpose specified.

In witness whereof, I have hereunto set my hand and seal in the presenceof two witnesses.

GEORGE C. WINSLOW. [1,. s.]

Witnesses A. J. Annnn,

OTIS A. EARL.

